Accumulation of byte array conversion to string

. Net EncryptionAlgorithmThe returned data is of the byte [] type, which makes it very troublesome to store. The simplest way is to convert byte [] to a string for storage. Of course, if the data volume is large, it should be different.

So I will convert byte [] into a string for a simple accumulation and analysis. Currently, there are three simple solutions for conversion.

1. Convert. tobase64string and convert. frombase64string

This method is simple and practical. The converted string contains: 26 English letters in upper and lower case, +,/, and 0 ~ 9, a total of 64 characters. "=" Usually appears at the end ". The reason is simple.

Principle: Describes 6-bit binary data with 64 characters.

Method: concatenate byte data and group the data in 6 bits. Use 64 characters to describe the data in 6 bits. If the group is less than 6 bits, use "=" to complete the data.

 

2. Write by yourselfCode, With hexadecimal characters 0 ~ 9. ~ F to describe the data.

Principle: use 16 characters to describe the 4bit binary. That is to say, a byte must be described using two hexadecimal characters.

Method: use characters to describe the first half and the second half of each byte.

This method requires manual writing, and the code is quite simple. You can use crtl + C Ctrl + v.

 Public   Static   String Bytetostring (Byte [] Bytes)
{
Stringbuilder strbuilder = New Stringbuilder ();
 Foreach ( Byte BT In Bytes)
{
Strbuilder. appendformat ( "{0: X2 }" , BT );
}
 Return Strbuilder. tostring ();
}
 Public   Static   Byte [] Stringtobyte (String Str)
{
 Byte [] Bytes = New   Byte [Str. Length/2];
 For ( Int I = 0; I <Str. Length/2; I ++)
{
 Int Btvalue = convert. toint32 (Str. substring (I * 2, 2), 16 );
Bytes [I] = ( Byte ) Btvalue;
}
 Return Bytes;
}

3. Encoding encoding is used to automatically convert encoding. getencoding ("encoding format"). getstring () and encoding. getencoding ("encoding format"). getbytes ()

Principle: force conversion using editing rules.

Mode: Use the encoding method to edit the data. The converted byte data or string may contain various strange or invisible characters, which is inconvenient to store.

 

 

Summary:

We recommend that you use the first method to convert strings. However, if the format is required, such as in a custom machine language, "+" "/" is not allowed, the second method is considered.

If you convert data to byte or string for memory operations, the third method is a good choice.